Closure for bottles



Nov. 8, 1927. 1,648,793

Q l. E. WEBER CLOSURE FOR BOTTLES Filed Feb. 16. 1927 Patented Nov. 8,1927.

U I ED STATES/PATENT OFFICE.

ISAAC EPHBAIM WEBER, OF 'L'UTON, ENGLAND, ASSIGNOR F ORE-HALF TO 3. LAFORTE LIMITED, A BRITISH COMPANY, AND ONE-FOURTH T0 HORACE EDWARD ALGOGEBOTH 0F LUTON, ENGLAND.

CLQSURE FOR BOTTLES.

Application filed February 16, 1927, Serial No. 168,664, and in GreatBritain May 2%, 1926.

Certain materials are apt to undergo spontaneous change with developmentof gaseous pressure so that corked or stoppered bottles containing themare liable to burst or to eject the closure violently when it isattempted to open them. This is particularly the case with peroxides,such as hydrogen peroxide, which are stable at normal temperatures butliberate oxygen at higher tem= peratures, as when in transit acrosstropical zones or in storage where the temperature is liable to rise.

This invention relates to a closure for receptacles such as bottlescontaining materials of this kind.

The closure comprises a pad of elastic material, such as rubber, held inplace on the mouth of the bottle by a suitable cap which does not fitthebottle in a gas-tight manner;

the pad has an incision in it so that it acts in known manner as a valveallowing passage of gas under pressure but" closing when the pressurehas been relieved.

In the accompanying drawings, Fig. 1 shows a rubber pad in section andin plan. Fig. 2 shews" a screw metal cap in elevation,

' in section and in underside planz. Fig. 3 is a vertical sectionthrough a bottle closed in. accordance with the invention.

The pad B has an incision C. It is placed in the mouth of the bottle Aand is held in place by a screw cap l) having a milled periphery F andradial grooves E in its under surface. Gas which escapes throughincision C passes away along the grooves in the cap and between thescrew threads on the neck of the bottle and in the cap.

Having thus described the nature of my said invention and the best meansI know of carrying the same into practical eflect, I claim A closure fora bottle to contain material liable to undergo change with developmentof gaseous pressure and having screw threads on its neck adjacent itsmonth, said closure comprising a pad of elastic material having anincision and a cap for holding said pa in place on the bottle month,said cap having grooves in its undersur'face and also having internalscrew threads to engage the screw threads on the bottle neck so that gas

